diff --git a/Gemfile.lock b/Gemfile.lock
index 9fbccc7..32d2f78 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     orm_adapter (0.0.7)
     pg (0.14.0)
     polyglot (0.3.3)
-    rack (1.4.3)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-pjax (0.5.9)